Quote:
Originally Posted by Julesomega
Don't know if this helps: from a 1995 databook
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Terrific! Thank you! Though it would seem to be a different schema than the older ones like I have.
Quote:
Originally Posted by Marconi_MPT4
Something does not look quite right with the font, and the date code should normally consist of four digits together with a character or two. Picture attached of a genuine Nat-Semi DM74x which was manufactured in 1985 week 52.
Edit: matches format as shown in previous post.
As an afterthought, does the ink come off easily?
Rich
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What you're saying makes absolute sense. Which is why I was confused by the codes I have. Maybe it's because the ones I have are probably much older. I think they are from the mid to late 70's. Perhaps the info was coded much differently then. The ink is on there pretty good. Doesn't scratch off easy. Thanks for the reply!
Quote:
Originally Posted by Julesomega
Quote:
Originally Posted by Marconi_MPT4
does the ink come off easily?
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Yes, with a file  |
Quote:
Originally Posted by Mark1960
I just checked on my MK14 and the date codes are /831 on the DM74S571Ns, /845 on the INS8060N, /847 on INS8154N, /821 on DM7445N, 7845 on DM74LS178N, 839 on DM74LS157J, -833 on DM80L95N, -816 on DM7408N, -831 on DM74LS04N, -841 on DM74LS00N, -840 on DM74LS08N.
I think the variation will be from different manufacturing sources not always following the letter of the spec.
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certainly sounds plausible. Thanks.